39. In conformity with the dispositions of the Council, synods were held in many of the ecclesiatical provinces. These often demonstarted a concern to bring the faithful to an active participation in the celebration of the divine mysteries. Simultaneously, the Roman Pontiffs began a vast programme of liturgical reform. The Roman Calendar and the liturgical books of the Roman Rite were revised in the relatively short space of time between 1568 and 1614. In 1588 the Sacred Congregation of Rites was established to promote and correctly order the liturgical celebrations of the Roman Church. The Catechismus ad Parochosfulfilled the provision of pastoral and liturgical formation.